A Distributed Sensor for Sensing Dynamic Deflections
981966
09/14/1998
- Event
- Content
- A distributed sensor is created to sense the rate of change in deflection of beam-like structures such as crane booms. This sensor will be useful in electrohydraulic compensation of boom deflections. The sensor is made of an array of strain-sensitive segments such as strain gages or piezoelectric film. In this example, segments of piezoelectric film convert strains on the surface of a vibrating beam into electrical outputs. These outputs are connected to low impedance signal conditioners. The output of the signal conditioners are then interpolated with a weighting vector that incorporates Lagrange polynomials, specified boundary conditions, and the desired location(s) of measurement. A simple linear combiner circuit combines the electrical outputs into the deflection velocity at the desired points.
- Pages
- 5
- Citation
- Sumali, H., "A Distributed Sensor for Sensing Dynamic Deflections," SAE Technical Paper 981966, 1998, https://doi.org/10.4271/981966.